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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200701-25">
<title>X.Org X server: Multiple vulnerabilities</title>
<synopsis>
Sean Larsson from iDefense Labs has found multiple vulnerabilities in the
DBE and Render extensions.
</synopsis>
<product type="ebuild">X.Org</product>
<announced>January 27, 2007</announced>
<revised>February 26, 2007: 02</revised>
<bug>157421</bug>
<access>local</access>
<affected>
<package name="x11-base/xorg-server" auto="yes" arch="*">
<unaffected range="ge">1.1.1-r4</unaffected>
<vulnerable range="lt">1.1.1-r4</vulnerable>
</package>
</affected>
<background>
<p>
The X Window System is a graphical windowing system based on a
client/server model.
</p>
</background>
<description>
<p>
Multiple memory corruption vulnerabilities have been found in the
ProcDbeGetVisualInfo() and the ProcDbeSwapBuffers() of the DBE
extension, and ProcRenderAddGlyphs() in the Render extension.
</p>
</description>
<impact type="normal">
<p>
A local attacker could execute arbitrary code with the privileges of
the user running the X server, typically root.
</p>
</impact>
<workaround>
<p>
Disable the DBE extension by removing the "Load dbe" directive in the
Module section of xorg.conf, and explicitly disable the Render
extension with ' Option "RENDER" "disable" ' in the Extensions section.
</p>
<p>
Note: This could affect the functionality of some applications.
</p>
</workaround>
<resolution>
<p>
All X.Org X server users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=x11-base/xorg-server-1.1.1-r4&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6101">CVE-2006-6101</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6102">CVE-2006-6102</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6103">CVE-2006-6103</uri>
</references>
<metadata tag="submitter" timestamp="Tue, 23 Jan 2007 12:31:17 +0000">
daxomatic
</metadata>
<metadata tag="bugReady" timestamp="Wed, 24 Jan 2007 15:54:52 +0000">
vorlon
</metadata>
</glsa>